Fig. 6
From: Optimizing cardiac amyloidosis assessment: utility of 1-h and 3-h 99mTc-PYP imaging
Planar anterior images of a patient 1 and 3 h after the injection of 99mTc-PYP. Planar anterior images of 84 years old man in 1-h and 3-h after injection of PYP. Images show a strong reduction in the uptake of 99mTc-PYP. The visual scoring of cardiac retention at 1 h was grade 3 and the H/CL ratio was 2.3, while that at 3 h was 1 and the H/CL ratio was 1.8. Please take note that within the figure, the red circle delineates the visual representation of reduced heart uptake